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Finding the Fourth Proportional to 108,701.40, 163,080.90 and 38,573.40

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Solution

The fourth proportional to 108,701.40, 163,080.90 and 38,573.40 is: 57,870.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,701.40 : 163,080.90 = 38,573.40 : x
  2. Step 2: Convert to fraction form
    108,701.40/163,080.90 = 38,573.40/x
  3. Step 3: Cross multiply
    108,701.40x = 163,080.90 × 38,573.40
  4. Step 4: Simplify right side
    108,701.40x = 6,290,584,788.06
  5. Step 5: Solve for x
    x = 6,290,584,788.06/108,701.40
  6. Step 6: Final answer
    x = 57,870.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.